I always request a dedicated studio, but I don't always get it. OP you are certainly welcome to call MS and put the request on your reservation. Keep in mind that you may not get it, but at least you requested it. Also keep in mind that any request need to be in order of importance. At the BCV, my first request is always pool view, then a larger balcony, w/dedicated last. This is probably why I seldom get the dedicated room, because it's the least important to me.